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通过CO2到酸的微生物电合成与生物去除相结合的负碳废水处理
Yang Ye1, Can Chen2, Xianghai Bian1
1College of Chemical and Biological Engineering, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Zhejiang University, Hangzhou 310027, China.
Water research
|September 10, 2025
概括
这项研究开发了一种可再生电力供电系统,用于碳负废水处理. 它将二氧化碳转化为酸盐以去除,实现高效率并减少对环境的影响.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 可持续化学 可持续化学
背景情况:
- 污水处理厂面临碳排放和污染的挑战.
- 传统的生物去除 (BNR) 需要大量的碳来源.
- 微生物电合成 (MES) 为碳捕获和资源回收提供了一个潜在的途径.
研究的目的:
- 开发一种可再生电力驱动的微生物电合成 (MES) 系统,与生物去除 (BNR) 集成.
- 通过将二氧化碳转化为用于脱的内部碳源来实现负碳废水处理.
- 评估系统的效率,稳定性,环境影响和经济可行性.
主要方法:
- 使用生物炭衍生导电材料将MES与BNR集成.
- 使用二氧化碳作为碳源,通过MES生产乙酸盐.
- 评估总 (TN) 清除效率和酸盐生产率.
- 在间歇性太阳能下评估系统稳定性,使用微生物储能.
- 进行生命周期评估 (LCA) 和成本分析.
主要成果:
- 乙酸盐的生产率达到1.98g/L·d,库伦比克效率为75%.
- 在稳定的运行下,TN去除效率超过97%.
- 净二氧化碳吸收达到0.22g的CO2/g的去除.
- 与传统的BNR相比,太阳能驱动系统的环境影响减少了61%.
- 乙酸盐生产成本在1.22美元/公斤的水平上具有竞争力.
结论:
- 集成的MES-BNR系统提供了有效的负碳废水处理解决方案.
- 该系统将废水处理厂转化为可持续的生物炼油厂.
- 这种方法促进了资源回收和可持续的水资源管理.
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